The NHRC-Remote+ allows DTMF remote control of up to eight loads. Unlike
many other DTMF remote control devices, the NHRC-Remote+ provides command
confirmation. Because it only requires receive audio, it can be used
with radio and wireline links. Each of the eight control outputs can be
configured for on/off or momentary control.

(Not quite actual size, it's 3" x 3")

Features:

Momentary or latching control of eight loads.

CW confirmation of control eliminates guesswork.

CW ID keeps you compliant with FCC rules.

Each output can have its own on and off code.

Unique codes allows a nearly unlimited number of units to be operated from the same audio source.